FBI agents are not paid in hourly wages, they are paid through the federal government system GS ratings which provides agents an annual salary rating for years served.
The tariff of the United States, like all actual protective tariffs, is partly revenue and partly protective, its original purpose of yielding revenue having been subordinated to that of giving protection, until it may now be best described as a protective tariff yielding incidental revenue.
Tariffs and Quotas Defined. A tariff is essentially a tax. It raises the price of an imported good, making it more expensive than similar domestic goods. The idea is to increase demand for domestic products while reducing the volume of imports. Tariffs also provide a source of revenue for the country levying them.